Waterproof construction.



No. 739,820. PATENTED SEPT. 29, 1903. H. BOLZE.

WATERPROOF CONSTRUCTION.

APPLICATION FILED MAR. 14, 1903.

NO MODEL. 2 SHEETS-SHEET 2.

WITNESSES; INVENTOR Elf/Ty lioize Q/Wc/ V V W 7 I ATTORNEYS UNITED STATES Patented September 29, 1903;

PATENT OFFICE.

HENRY BOLZE, OF HAW'THORNE, NEW YORK, ASSIGNOR TO THE SIOILIAN ASPHALT PAVING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

WATERPROOF.CONSTRUCTION.

SPECIFICATION forming part of Letters Patent No. 739,820, dated September 29, 1903.

Application filed March l4, 1903.

I To all whom it may concern.-

- material.

Be it known that I, HENRY BOLZE, acitizen of the United States, and a residentof Hawthorne,in the county of Westchester and State of New York, have invented certain new and useful Improvements in Waterproof C0nstruction, of which the following is a specification. I

My invention relates to waterproof construction applicable to buildings or walls, and particularly adapted for use in tunnels and other underground-work.

The object of my invention is to provide a simple and very efficient method of constructing walls that are absolutely waterproof. V

The invention will be fully described hereinafter and the features of novelty pointed out in the appended claims.

Reference is to be had to the accompanying drawings, in which- Figure l is a partial longitudinal sectional elevation illustrating the construction of a tunnel in accordance with my invention, the section being taken on line l 1 of Fig. 2; and Fig. 2 is a cross-section on line 2 2 of Fig. 1.

The outer structure or foundation may be made in any suitable manner. Thus I have shown a concrete bottom A and an outer wall B,which may be constructed of common brick. The inner faces of the bottom A and of the outer wall B are lined with two or three layers of waterproofing paper 0 O or equivalent Upon the bottom layer O, I spread a molten asphalt mixture D, preferably of a composition disclosedin another application for patent filed by me concurrently herewith. Into this molten asphalt mixture I place bricks E, which have been previously heated, so as to avoid chilling the asphalt mixture. According to requirements one or more courses of such bricks are laid in the asphalt mixture. Two courses are shown in the drawings. The bottom having thus been constructed, I proceed as follows to build the waterproof wall on the inside of the lining C: At a distance from the said lining O which corresponds to the intended thickness of the wall I erect a temporary wall, which may be made of' planks F,resting against uprights G,which are heldin position by floor-braces h and inclined braces J. At first only the bottom seen No. 147,717. (NomodeL) plank is in position, and the molten asphalt mixture is placed on top of the upper course of bricks E between said plank and the lining G.

Then bricks E, heated, as before described,

plank F is reached the second plank is added at the top, and in this manner the wall is continued upward until the top is reached. In this mannerI am enabled to producea vertical wall, notwithstanding the employment of a molten asphalt mixture as a hinder or mortar for the bricks.

Owing to their heated condition, the bricks have no chilling influence upon the asphalt mixture and absorb some of this mixture into their pores, whereby the entire structure is rendered absolutely Waterproof. Furthermore, the joints between the bricks and courses are filled by the hardened asphalt mixture, and the finished structure therefore forms a continuous waterproof wall.

It will be understood that if curved walls are to be built in accordance with my invention the planks or other temporary support will be given the appropriate shape.

What I claim ,as new, and desire to secure by Letters Patent, is

1. The herein-described improvement in waterproof construction, which consists in placing a molten asphalt mixture upon a suit able foundation, laying heated bricks in said go molten mixture and applying a retainingbody against the exposed surface of the structureso as to hold the latter steady untilthe asphalt mixture shall have become hard, and to prevent the molten mixture from being 5 expelled from between the bricks and from overflowing onto the exposed surface of the structure.

2. The herein-described improvement in waterproof construction, which consists in :00 preparing a suitable foundation or outer structure, applying a lining of waterproof material on the inner surface of said structure, placing a molten asphalt mixture upon the upper surface of said lining, laying heated bricks in said mixture, placing an upright retaining-body at a distance from the upright portion of said waterproof lining, erecting a wall of heated bricks laid in molten asphalt mixture between the upright portion of the lining and said retaining-body, and raising said retaining-body as the erection'of'the 10 Wall proceeds.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

HENRY BOLZE;

\Vitnesses:

H. HAGGERTY, FREDERICK SIEMON. 

